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1. Download and install the corresponding CH340 serial port chip driver according to the operating system.
2. Download the official FLASH download tool ESP FLASH DOWNLOAD TOOL
3. Automatic firmware download: Press the module, plug in the USB cable to supply power, cooperate with the FLASH download tool, configure the corresponding burning parameters, click START to download, the firmware burning will start, the downloader will automatically reset and put the module into burning mode.
1 x Test board